Pteridines. Part CXIX.
作者:Wolfgang Pfleiderer
DOI:10.1002/hlca.200890039
日期:2008.2
A variety of pyrimidine precursors 12–25 were converted into a series of new 7-hydroxylumazines (=7-hydroxypteridine-2,4(1H,3H)-diones) 26–35 which functioned as starting materials for the transformation into the corresponding 7-chlorolumazines 36–45. Subsequent reaction with hydrazine led to the 7-hydrazinolumazines 46–55 which gave on nitrosation the 7-azidolumazines 1 and 56–64. These compounds
多种嘧啶前体的12 - 25被转换成一系列的新的7- hydroxylumazines(= 7-hydroxypteridine -2,4(ħ,3 ħ) -二酮)26 - 35,其功能作为起始原料用于变换到相应的7-氯lumazines 36 – 45。与导致7-hydrazinolumazines肼随后反应46 - 55这给上亚硝化7 azidolumazines 1和56 - 64。这些化合物在二甲苯中短时间加热,由此得到1和56– 61显示了新的蝶啶-嘌呤相互转化,形成了一种新的类型的1,3-二取代或3-取代的黄嘌呤8-胺衍生的腈(2,3,6,7-四氢-N-甲基二炔2, 6-dioxo-1 H -purin-8-铵盐)11和65 – 70。额外的6 -烷基取代基中的7-azidolumazines存在63和64或在未取代的N(3)的位置的62引起进一步重排黄嘌呤-9-甲腈71 - 73。长时间加热7-叠氮基1